Patent US2762797A successfully refreshed from Google Patents.
US2762797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dihalxmuazemes
Assignee: —
•
Filing: —
•
Granted: 1956-09-11
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Expires: 1973-09-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:48
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/36; C07D251/40; C07D251/54; C07D253/00; C07D253/02; C07D253/06; C07D253/065; C07D253/07; C07D253/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF PREPARING A 2,4-DIHALO-S-TRIAZINE WHICH COMPRISED ADMIXING HYDROGEN CYANIDE WITH A CYANOGEN HALIDE UNDER ESSENTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF A CATALYST OF THE GROUP CONSISTING OF HYDROGEN CHLORIDE, HYDROGEN BROMIDE, ALUMINUM CHLORIDE, ALUMINUM BROMIDE, DICHLOROMETHYLFORMAMIDINE HYDROCHLORIDE, AND DICHLOROMETHYLFORMAMIDINE HYDROOBROMIDE, SAID CATALYST BEING PRESENT IN AN AMOUNT NOT EXCEEDING ABOUT 0.2 MOLE PER MOLE OF CYANOGEN HALIDE AND MAINTAINING THE MIXTURE FOR TIMES AND TEMPERATURE RANGING FROM ABOUT AT LEAST 4 WEEKS AT ROOM TEMPERATURE TO AT LEAST 2 HOURS AT 80* C.
Claim 2
Independent Claim
86 words
THE METHOD OF PREPARING A 2,4-DIHALO-S-TRIAZINE WHICH COMPRISED ADMIXING HYDROGEN CYANIDE WITH A CYANOGEN HALIDE UNDER ESSENTIALLY ANHYDROUS CONDITIONS IN THE PRESENCE OF A CATALYST OF THE GROUP CONSISTING OF HYDROGEN CHLORIDE, HYDROGEN BROMIDE, ALUMINUM CHLORIDE, ALUMINUM BROMIDE, DICHLOROMETHYLFORMAMIDINE HYDROCHLORIDE, AND DICHLOROMETHYLFORMAMIDINE HYDROOBROMIDE, SAID CATALYST BEING PRESENT IN AN AMOUNT NOT EXCEEDING ABOUT 0.2 MOLE PER MOLE OF CYANOGEN HALIDE AND MAINTAINING THE MIXTURE FOR TIMES AND TEMPERATURE RANGING FROM ABOUT AT LEAST 4 WEEKS AT ROOM TEMPERATURE TO AT LEAST 2 HOURS AT 80* C.
References Cited (Backward Citations)
US1911689A
Cited
US2653934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |